package collection;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

/** 集合的排序--Point对象 */
public class SortPoint {
    public static void main(String[] args) {
        List<Point> list = new ArrayList<>();
        list.add(new Point(5,8));
        list.add(new Point(15,60));
        list.add(new Point(57,89));
        list.add(new Point(1,4));
        list.add(new Point(10,8));
        list.add(new Point(22,35));
        System.out.println("list原始数据："+list);
        //匿名内部类
        Collections.sort(list,(o1, o2)-> {
                int len1 = o1.getX()*o1.getX()+o1.getY()*o1.getY();
                int len2 = o2.getX()*o2.getX()+o2.getY()*o2.getY();
                return len1-len2;//按距离远点的直线距离 升序
        });
        list.sort((o1,o2)-> o2.getX()-o1.getX() );
        System.out.println("排序后的list:"+list);
    }
}
